Subtract 21/54 from 72/10
1st number: 7 2/10, 2nd number: 21/54
72/10 - 21/54 is 613/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 54 is 270
Next, find the equivalent fraction of both fractional numbers with denominator 270 - For the 1st fraction, since 10 × 27 = 270,
72/10 = 72 × 27/10 × 27 = 1944/270 - Likewise, for the 2nd fraction, since 54 × 5 = 270,
21/54 = 21 × 5/54 × 5 = 105/270 - Subtract the two like fractions:
1944/270 - 105/270 = 1944 - 105/270 = 1839/270 - After reducing the fraction, the answer is 613/90
- In mixed form: 673/90
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